An Automated Negotiation Engine for Consistency of Access Policies in Grid

The dynamic change of users and resources would incur the overall inconsistency of the access policies between different domains in grid. This would have a bad effect on the grid operations, and compromise the grid system. To address the problem, this paper proposes an automated negotiation engine combining with the authorization mechanism. The engine can detect timely the change of access policies, automatically negotiate and authorize to ensure the overall consistency of the access policies between different domains in grid. the test result of the engine shows that the engine just added little overhead to the existing authorization mechanism, and it can resolve the inconsistency of access policies quicklier and more conveniently, compared with manual work. The engine can better adapt to the dynamic change of grid, and improves system performance by avoiding wasting more system overhead dealing with the grid operations with the inconsistent permissions.